Possible endometriosis

Nicole
So I've been trying for about a year to have a baby with no success. I've been off birth control for alittle over 2 years now. Probably for the past year my cramps during my period have been unbearable. I've taken off work.. can barely stand up straight.. I've thrown up on a few occasions.  I'm 33 and with the fact that I've tried to get pregnant for awhile, my dr thinks it could be endometriosis. Can anyone give me any insight that has it. I know it can lead to problems getting pregnant. I'm making an appt soon with a specialist. Thank you to anyone that could shed some light on this for me because obv I'm thinking the worst.